瓜哈拉湾,亚马逊三角洲的微塑料和微纤维:潜在的来源和变化
Luana Francy Oliveira Santos1, Vania Neu2, Raqueline Cristina Pereira Monteiro3
1Laboratório de Oceanografia Biológica and Centro de Estudos Avançados da Biodiversidade, Universidade Federal do Pará, Av. Augusto Corrêa s/n, Guamá, Belém, PA 66075-110, Brazil.
Marine pollution bulletin
|September 14, 2023
概括
微塑料和微纤维在亚马逊三角洲普遍存在,特别是在城市附近. 这项研究强调了亚马逊河.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 海洋学 海洋学 海洋学
背景情况:
- 亚马逊河在将微塑料运送到海洋中的作用尚不清楚.
- 沿着亚马逊三角洲的城市化构成了微塑料污染的潜在来源.
- 瓜哈拉湾被确定为评估微塑料分布的关键区域.
研究的目的:
- 评估亚马逊三角洲中微塑料 (MP) 和微纤维 (MF) 的分布和丰度.
- 确定瓜哈拉湾内国会议员和国务卿的潜在来源和运输途径.
- 为了将微塑料污染与城市附近和水力动力学因素相关联.
主要方法:
- 在干旱和雨季 (2014-2015) 期间,从瓜哈拉湾的六个站点收集的地表水样本.
- 微塑料和微纤维丰富性的量化 (颗粒·m−3).
- 粒子类型,颜色和聚合物组成的识别.
主要成果:
- 微塑料和微纤维的丰富程度在218-5529.98颗粒·m-3.3之间.
- 在海湾城市化边缘附近观察到更高的度.
- 人造纤维素纤维占大多数 (68.8%),聚乙烯二甲 (52.9%) 和聚胺 (34.4%) 是主要的聚合物.
结论:
- 亚马逊三角洲的城市核心是微塑料和微纤维污染的重要来源.
- 当地的水力动力学条件影响了海湾中微塑料的分布.
- 调查结果强调需要城市废物管理,以减轻亚马逊地区的海洋污染.
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